Vinicius Junior apologised to Brazil's supporters following their defeat to Paraguay, acknowledging "it is a difficult time" for the Selecao.
The five-time world champions were beaten 1-0 in Asuncion, with Diego Gomez's 20th-minute strike condemning them to a fourth defeat in five qualifying games.
Dorival Junior's side occupy fifth place in the CONMEBOL section - in which the top six nations automatically qualify for the 2026 World Cup, with the team finishing seventh entering the Inter-confederation play-offs.
Already eight points adrift of leaders Argentina, Brazil are now just one ahead of eighth-place Bolivia, and Vinicius knows he and his team-mates must do better.
"We apologise to the fans, who are always on our side," the Real Madrid forward told Sportv. "But this is a difficult time, we just want to improve.
"I know my potential, I know what I can do for the national team. Of course, it's been a very difficult process, because when you don't have confidence, you don't get goals, you don't get assists and good performances.
"We know the situation we're in, we want to get Brazil out of this situation at any cost, we all have to go home now and start thinking about what we can do to get back to playing well.
"We cannot come here, lose these points and play the way we did. It is a difficult time, we must take on board all the criticism and return as quickly as possible to put Brazil on top."
Meanwhile, Marquinhos believes Brazil are going through a transitional period, and that they are not brimming with belief as a result.
"The coach is still figuring out the best way for us to play and that's reflected in the result," the defender told Brazilian TV Globo. "There are a lot of new players, we are lacking confidence.
"Qualifying isn't easy, it's a difficult time, and we have to know how to manage it. It's a time of transition, we're not feeling confident. We're going to work hard, getting results on the pitch is the best answer."
Colombia gained a measure of revenge for their Copa America final loss to Argentina by beating the Albiceleste 2-1 in a World Cup qualifier in Barranquilla.
Nestor Lorenzo's side approached Tuesday's clash at the Estadio Metropolitano Roberto Melendez five points adrift of their opponents in the 10-man CONMEBOL qualification group, but a deserved win saw them close that gap to two points.
Wolves defender Yerson Mosquera, who was later carried off injured on a stretcher, headed in the opener after 25 minutes, nodding into an unguarded net after James Rodriguez sent a delicate cross over to the far post.
Argentina struggled to carve out clear-cut chances in the first half but levelled just three minutes into the second period, with James' slack pass being cut out by Nicolas Gonzalez, who darted into the area before sliding his finish home.
James was given a chance to redeem himself just 12 minutes later, however, as a VAR review led to Colombia being awarded a penalty for Nicolas Otamendi's trip on Daniel Munoz.
James – the Player of the Tournament at this year's Copa – made no mistake from 12 yards, sending Emiliano Martinez the wrong way for what proved to be the winner.
Colombia almost added a third goal at the death, only for Otamendi to nod Munoz's goal-bound flick off the line, but time still ran out on Argentina.
Data Debrief: Messi-less visitors come unstuck
Argentina made light of Lionel Messi's injury-enforced absence as they thrashed Chile 3-0 last time out, but they struggled to create chances without their talisman on Tuesday.
They ended the game having only hit the target with one of their 13 shots, with a total expected goals (xG) figure of 0.9, in contrast to Colombia's 2.99.
Prior to Tuesday's match, Argentina had only fallen behind on the road in a South American qualification game once under Lionel Scaloni, when fighting back to beat Bolivia 2-1 in October 2020. There was to be no comeback this time around.
St Kitts and Nevis, Guyana, Puerto Rico, and the Dominican Republic registered a maiden win in their respective Concacaf World Cup Qualifying campaign, as they brought the curtains down on second round action, on Tuesday.
Five players scored twice for their respective teams, including Guyana’s Deon Moore, Dominican Republic’s Rafael Mata and Dorny Romero, and Puerto Rico’s Jeremy de Leon and Wilfredo Rivera.
St Lucia vs Aruba
St Lucia and Aruba were the only teams that failed to separate themselves, as they played out a 2-2 scoreline in Group C at Wildey Turf in Bridgetown, Barbados.
Aruba got the perfect start they desired, when Walter Bennett headed home from close range to gift them a 22nd-minute lead, before Isai Marselia added a second from the penalty spot in the 43rd minute.
However, Ridel Stanislas (45+2) cut the deficit for St Lucia with a tidy finish from deep inside the 18-yard box, to make it 2-1 at the break.
Peter Pearson then pulled St Lucia level in the 66th minute to secure a share of the spoils.
With this, their first point of the campaign, St Lucia and Aruba occupy third and fourth positions in the group behind Curaçao and Haiti, on six points each, heading into the break.
St Kitts and Nevis vs Bahamas
St Kitts and Nevis edged Bahamas, 1-0, in Group B at Warner Park in Basseterre.
Ethan Bristow found the all-important goal in the 12th minute when he pounced on a rebound.
With the win, The Sugar Boyz inched up to third in the group, behind Costa Rica (six points) and Trinidad and Tobago (four points).
Guyana vs Belize
Guyana proved too strong for Belize with a 3-1 victory in Group D action at Wildey Turf in Bridgetown, Barbados.
After playing out a goalless first half, Deon Moore finished off an Omari Glasgow pass in the 66th minute to put Guyana ahead.
The Golden Jaguars doubled the lead a minute later courtesy of Liam Gordon’s dazzling solo effort which he finished off with a close range effort.
Moore completed his brace in the 71st with a flick of the ball inside the box to redirect Nathan Moriah-Welsh’s pass.
However, Carlos Bernardez pulled one back for Belize in the 88th, as he rose above defenders to head home Jahryl Smith’s weighted cross.
The win moved the Golden Jaguars up to third place in the group, behind Nicaragua and Panama, on six points each.